Haevey lull



No. 10,477. PATENTED JAN. 31, 1854.

H. LULL. SHUTTER HINGE.

UNITED STATES PATENT OFFICE f HARVEY LULL, or SOUTH COVENTRY,CONNECTICUT, ASSIGNOB TO H. LULL AND RioHD.

PORTER.

SHUTTER-HINGE.

Specification of Letters Patent No. 10,477, dated January 31, 1854.

To all whom it may concern Be it known that I, HARVEY LULL, late ofWheeling, in the county of Ohio and State of Virginia, but now of SouthCoventry, in the county of Tolland and State of Connecticut, haveinvented certain new and useful Improvements in Self-Locking Hinges; andI do hereby declare the following to be a full, clear, and exactdescription of the same, reference being had to the accompanyingdrawings, making a part thereof, in which Figure 1, represents the hingeas open and locked. Fig. 2 represents the hinge in its position when theshutter is drawn fromthe wall sufficiently far, to unlock it, and Fig.3, represents the hinge whenthe shutter is closed.

There are several varieties of shutter and door hinges, the greaterportion of which in being opened bring two inclined planes in actioncausing the shutter or door to rise,- the object being to cause doorsespecially to swing clear of the carpet. Some of these are provided witha fastening which is formed of a separate piece. Another method is tomake a series of planes, which admits of the door rising and fallingseveral times in the act of swinging it open and shut. I do not layclaim to any of these hinges, for they are almost useless for shutterhinges, for which purpose my hinge is especially designed.

It is well known that window shutters must swing into the window framesseveral inches before they come to their seats, and to use either of theclass of hinges before mentioned, would cause the shutter to rise'upagainst the frame and bind, or else it must be cut away, which wouldadmit rain snow &c. My hinge allows the shutter to swing aroundhorizontally until it almost reaches the wall when it drops and locks.This is one distinguishing feature of mine over other hinges. Again myhinge is composed of but two pieces, each entirely of cast metal,

while the others which are self locking are composed of three or more,and indeed difference between my hinge, and those heretofore essayed,consists in my being able to use a cast iron spindle with perfectsafety, from the fact that when the shutter is opened and locked, theforce of the wind tending to close the shutter is taken entirely off thespindle and thrown upon two cast arn1sand in opening or closing theshutter its weight is partially taken upon two square shoulders, thusrelieving the spindle which is really but adirectrix to the other parts,without taking the weight of the shutter upon it. For this reason I cansafely rely upon the castiron spindle. contend, however, that cast ironspindles have not been used, but I do contend that they are liable to bebroken by any sudden slamming of the shutter, as they heretofore had tosustain its entire weight. I do not assert that my invention consists ofthree distinct differences between what has heretofore been done, andwhat I have done, but I claim, so combining these differences, astoproduce in a hinge of two pieces, a very cheap, strong, and efiectiveself locking hinge, which has not been done before.

The nature of my invention therefore consists in the so forming of aself locking hinge, cast in two pieces, as that a shutter hung thereonmay swing open or shut on a horizontal plane, and look when opened to Ido not its limit, and so that also when locked open,

the strain shall be taken off the spindle and thrown onto cam arms, andthus effectually relieve the spindle from the force of the winds.

To enable others skilled in the art to make and use my invention I willproceed to describe the same with reference to the drawor shank of thehinge, extending from the 05 shoulder to the wing or plate, andprojecting from two-thirds to three-fourths of its inclination from theface of the hinge. The other a, Fig. 3, is placed directly opposite, andextends the same distance from the center of the hinge, and faces, inthe opposite.

direction to that b. The inclination of the planes should be aboutforty-five degrees at the extreme outer end and approach the vertical asthey come nearer the center of the hinge. The shoulder is formed withthe half next the arm standing even with the top of the planes, and theother half out down level with the bottom of the planes. The bottom halfof the hinge inverted makes the top half by substituting the hole forthe pivot. When a shutter hung on these hinges is thrown open, restingon the shoulders of the hinges, it neither passes over notches, nor upinclined planes, but swings freely around to a. position nearly parallelwith the wall where the support of the shutter passes from the shoulders0, (Z, Fig. 2, to the inclined planes, and the bottoms of the planes A,A, are brought to the tops of the planes B, B, as shown in Fig. 2, andthe shutter is carried to the wall by its gravity on these inclinedplanes, and the hinge is locked as shown in Fig. 1, one half havingdropped below its general position.

In closing the shutter, a slight force only i is necessary viz: to drawthe shutter four or five inches to force it up the planes, when thesupport of the shutter is returned to the shoulders c, d, on which itrests and swings horizontally to its seat, entirely preventing theplanes from coming in contact as it closes as shown in Fig. 3.

Having thus fully described the nature of my invention what I claimtherein as new and desire to secure by Letters Patent, is,

The so forming of a self locking shutter hinge, cast in two pieces, asthat theblind 0r shutter hung thereon may swing open or shut on ahorizontal plane, and look when opened to its limit, and so that alsowhen locked open, the strain shall be taken ofi from the spindle andthrown onto cam arms, and thus efi'ectually relieve the spindle from theweight or strain of the shutter, substantially as described.

HARVEY LULL.

itnesses W. A. LOOMIS, D. H. CLARKE.

